EP 3819079 A4 20220323 - SHUTTER DEVICE AND MACHINE TOOL
Title (en)
SHUTTER DEVICE AND MACHINE TOOL
Title (de)
VERSCHLUSSVORRICHTUNG UND WERKZEUGMASCHINE
Title (fr)
DISPOSITIF D'OBTURATION ET MACHINE-OUTIL
Publication
Application
Priority
- JP 2018157796 A 20180824
- JP 2019025802 W 20190628
Abstract (en)
[origin: EP3819079A1] Component deformation or damage is prevented. A shutter device which moves in conjunction with momement of a moving unit in a predetermined direction comprises a first shutter which moves in the predetermined direction inconjunction with movement of the moving unit to cover part of an opening and a second shutter arranged between an end of the opening and the first shutter to expand and contract in the predetermined direction in conjunction with momement of the moving unit. The second shutter comprises a plurality of shutter plates overlapping each other, each of which having a first plate whose longitudinal direction is along the predetermined direction and a second plate whose longitudinal direction is along a perpendicular direction to the first plate. The second plate of the shutter plate of the second shutter is provided with a coupling unit which couples the overlapping shutter plates in a manner that they can move in the predetermined direction relative to each other.
IPC 8 full level
B23Q 11/08 (2006.01)
CPC (source: EP KR US)
B23Q 11/0825 (2013.01 - EP KR US); B23Q 11/0891 (2013.01 - KR)
Citation (search report)
- [YDA] JP H1058276 A 19980303 - OKUMA MACHINERY WORKS LTD
- [YA] JP 2003211340 A 20030729 - MURATA MACHINERY LTD
- [YA] US 3751120 A 19730807 - KIETZ L
- See also references of WO 2020039744A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3819079 A1 20210512; EP 3819079 A4 20220323; CN 112469534 A 20210309; CN 112469534 B 20230505; JP 2020028967 A 20200227; JP 7137057 B2 20220914; KR 20210025657 A 20210309; TW 202009093 A 20200301; TW I802727 B 20230521; US 2021154788 A1 20210527; WO 2020039744 A1 20200227
DOCDB simple family (application)
EP 19852372 A 20190628; CN 201980049042 A 20190628; JP 2018157796 A 20180824; JP 2019025802 W 20190628; KR 20217003362 A 20190628; TW 108126808 A 20190729; US 202117163706 A 20210201